[FIR-TEST] Add new testdata generated after changes in previous commit

compiler/testData/diagnostics/tests/when/When.fir.kt

@@ -0,0 +1,46 @@
+// !WITH_NEW_INFERENCE
+fun Int.foo() : Boolean = true
+
+fun foo() : Int {
+    val s = ""
+    val x = 1
+    when (x) {
+      is String -> 1
+      !is Int -> 1
+      is Any? -> 1
+      is Any -> 1
+      s -> 1
+      1 -> 1
+      1 <!AMBIGUITY!>+<!> <!UNRESOLVED_REFERENCE!>a<!> -> 1
+      in 1..<!UNRESOLVED_REFERENCE!>a<!> -> 1
+      !in 1..<!UNRESOLVED_REFERENCE!>a<!> -> 1
+      else -> 1
+    }
+
+    return 0
+}
+
+val _type_test : Int = foo() // this is needed to ensure the inferred return type of foo()
+
+fun test() {
+  val x = 1;
+  val s = "";
+
+  when (x) {
+    s -> 1
+    "" -> 1
+    x -> 1
+    1 -> 1
+  }
+
+  val z = 1
+
+  when (z) {
+    else -> 1
+    1 -> 2
+  }
+
+  when (z) {
+    else -> 1
+  }
+}